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3 years ago

An element which forms an oxide that is a reactant in photosynthesis (period 2)

Chemistry

2 answers:

docker41 [41]3 years ago

5 0

Answer:

carbon dioxide gas

Explanation:

carbon dioxide gas is an element which forms and oxide that is a reactant in photosynthesis.

lawyer [7]3 years ago

3 0

Answer:

Carbon dioxide

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>

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Lighting a match is an example of what kind of energy conversion?

Alika [10]

Answer:

Mechanical Energy to Thermal Energy

When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. This is a transformation from mechanical energy to thermal (heat) energy.

Explanation:

4 0

3 years ago

Read 2 more answers

Please answer the following questions with the proper significant figures:

photoshop1234 [79]

a)32.670 + 1.2240 = 33.8904

33.8904-14.0 = 19.8904

b)12.080 × 4.050 × 0.231

=54.36 × 0.231

=12.55716

c)(3.051 × 103) ×(2.00 × 10.2)=

314.253 × 20.4 = 6410.7612

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4 years ago

He particles are mostly free of each other influence is solid , liquid , gas

Simora [160]

the most free particles are gases, then liquids, solids

4 0

4 years ago

Experiments with rats show that if rats are dosed with 3.0 mg/kg of cocaine (that is, 3.0 mg cocaine per kg of animal mass), the

Aliun [14]

Answer:

The molecules of dopamine would be produced in a rat after 60 seconds of a 3.0 mg/kg dose of cocaine is $2.258\times 10^{12} molecules$ .

Explanation:

Concentration of dopamine = 0.75 μM = $7.5\times 10^{-7} M$

1 μM = $10^{-6} M$

Volume of the brain in which dopamine is produced = $V=5.00 mm^3$

$1 mm^3=10^{-6} L$

$V = 5.00\times 10^{-6} L$

Moles of dopamine = n

$Concentration=\frac{moles}{Volume}$

$7.5\times 10^{-7} M=\frac{n}{5.00\times 10^{-6} L}$

$n=7.5\times 10^{-7} M\times 5.00\times 10^{-6} L=3.75\times 10^{-12} mol$

$1 mol = 6.022\times 10^{23} molecules$

So, molecules in $3.75\times 10^{-12} mol$ of dopamine :

$3.75\times 10^{-12}\times 6.022\times 10^{23}=2.258\times 10^{12} molecules$

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3 years ago

Which is an example of a genetic disorder caused by errors that occur during meiosis?

-BARSIC- [3]

Down syndrome, because it cannot be inherited and is a duplication error

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3 years ago